Before the filing date, the same invention-creation has been filed with the Patent Office by others and recorded in the patent application documents published after the filing date. This kind of application is called conflict application. The purpose of stipulating the application conflict is to avoid repeatedly granting the same invention or utility model patent to different people. When judging novelty, conflicting applications are only considered as prior art. When judging creativity, the concept of the prior art does not include conflicting applications. There are two different systems in the world for conflicting applications. (1) Pre-claim system, that is, comparing the claims of the two applications before and after, if the claims are the same, the latter application has no novelty. (2) Full-text content system, that is, comparing the claim of the latter application with the full-text content of the previous application (including specification and claim). If the claim of the latter application has been recorded in the specification or claim of the previous application, the latter application cannot obtain a patent right. China's patent law adopted the latter.